Excuse me, sir. Yes, Can I help you? Is this where I pay the airport tax? Yes, miss. Just as the sign says. How many? I'm sorry, but I've never done this before. How many what? How many people are you paying the tax for? Just yourself? No, me and my boyfriend. The two of us. They are 12 US dollars each, so you owe me $ 24. Oh, OK. Here's $ 30. And here are your two receipts and your change,$6. Gee. thanks. Uh, now what? Just give these receipts to the lady at the door to immigration.